Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.8.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpDY.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo) Using package Complex with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Using package Buildings with version 8.0.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo) Running command: "" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpDY,fileNamePrefix="Buildings_maint_8_0_x_Buildings_Electrical_AC_ThreePhasesUnbalanced_Conversion_Examples_TransformerStepUpDY",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpDY,fileNamePrefix="Buildings_maint_8_0_x_Buildings_Electrical_AC_ThreePhasesUnbalanced_Conversion_Examples_TransformerStepUpDY",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.1-maint.8.0.x/package.mo): time 1.572/1.572, allocations: 288.4 MB / 303.6 MB, free: 8.168 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.0009224/0.0009226, allocations: 186.3 kB / 372.3 MB, free: 10.13 MB / 298.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.315/1.315, allocations: 205.4 MB / 0.631 GB, free: 9.926 MB / 458.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0006923/0.0006922, allocations: 82.36 kB / 0.7444 GB, free: 5.852 MB / 0.5573 GB Notification: Performance of FrontEnd - loaded program: time 0.0003496/0.0003496, allocations: 16.72 kB / 0.8676 GB, free: 141.8 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1718/0.1722, allocations: 115.3 MB / 0.9802 GB, free: 27.27 MB / 0.6198 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpDY): time 0.01148/0.1837, allocations: 15.41 MB / 0.9952 GB, free: 11.81 MB / 0.6198 GB Notification: Performance of NFInst.instExpressions: time 0.006107/0.1899, allocations: 5.724 MB / 1.001 GB, free: 6.07 MB / 0.6198 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0005175/0.1904, allocations: 35.94 kB / 1.001 GB, free: 6.035 MB / 0.6198 GB Notification: Performance of NFTyping.typeComponents: time 0.0005162/0.1909, allocations: 313.7 kB / 1.001 GB, free: 5.727 MB / 0.6198 GB Notification: Performance of NFTyping.typeBindings: time 0.001268/0.1922, allocations: 0.899 MB / 1.002 GB, free: 4.824 MB / 0.6198 GB Notification: Performance of NFTyping.typeClassSections: time 0.001037/0.1933, allocations: 0.6386 MB / 1.003 GB, free: 4.188 MB / 0.6198 GB Notification: Performance of NFFlatten.flatten: time 0.002849/0.1961, allocations: 5.008 MB / 1.008 GB, free: 15.17 MB / 0.6355 GB Notification: Performance of NFFlatten.resolveConnections: time 0.008069/0.2042, allocations: 7.078 MB / 1.014 GB, free: 8.012 MB / 0.6355 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001584/0.2058, allocations: 1.347 MB / 1.016 GB, free: 6.66 MB / 0.6355 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001998/0.2078, allocations: 1.928 MB / 1.018 GB, free: 4.727 MB / 0.6355 GB Notification: Performance of NFPackage.collectConstants: time 0.0002736/0.2081, allocations: 196 kB / 1.018 GB, free: 4.535 MB / 0.6355 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001471/0.2096, allocations: 1.022 MB / 1.019 GB, free: 3.512 MB / 0.6355 GB Notification: Performance of NFScalarize.scalarize: time 0.001131/0.2107, allocations: 1.458 MB / 1.02 GB, free: 2.051 MB / 0.6355 GB Notification: Performance of NFVerifyModel.verify: time 0.001144/0.2118, allocations: 1.367 MB / 1.022 GB, free: 0.6719 MB / 0.6355 GB Notification: Performance of NFConvertDAE.convert: time 0.003942/0.2158, allocations: 5.611 MB / 1.027 GB, free: 11.05 MB / 0.6511 GB Notification: Performance of FrontEnd - DAE generated: time 5.811e-06/0.2158, allocations: 8 kB / 1.027 GB, free: 11.04 MB / 0.6511 GB Notification: Performance of FrontEnd: time 1.203e-06/0.2158, allocations: 0 / 1.027 GB, free: 11.04 MB / 0.6511 GB Notification: Performance of Transformations before backend: time 4.79e-05/0.2159, allocations: 0 / 1.027 GB, free: 11.04 MB / 0.6511 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 809 * Number of variables: 809 Notification: Performance of Generate backend data structure: time 0.003868/0.2198, allocations: 2.456 MB / 1.029 GB, free: 8.523 MB / 0.6511 GB Notification: Performance of prepare preOptimizeDAE: time 3.826e-05/0.2198, allocations: 11.97 kB / 1.03 GB, free: 8.512 MB / 0.6511 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0005045/0.2203, allocations: 462.8 kB / 1.03 GB, free: 8.047 MB / 0.6511 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.009388/0.2297, allocations: 2.026 MB / 1.032 GB, free: 6.016 MB / 0.6511 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002264/0.232, allocations: 1.647 MB / 1.034 GB, free: 4.328 MB / 0.6511 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001296/0.2321, allocations: 222.5 kB / 1.034 GB, free: 4.109 MB / 0.6511 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0004253/0.2326, allocations: 296.4 kB / 1.034 GB, free: 3.82 MB / 0.6511 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.009578/0.2421, allocations: 5.907 MB / 1.04 GB, free: 13.82 MB / 0.6667 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.714e-05/0.2422, allocations: 0 / 1.04 GB, free: 13.82 MB / 0.6667 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003187/0.2425, allocations: 131.9 kB / 1.04 GB, free: 13.7 MB / 0.6667 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0002691/0.2428, allocations: 201 kB / 1.04 GB, free: 13.5 MB / 0.6667 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0113/0.2541, allocations: 5.954 MB / 1.046 GB, free: 7.523 MB / 0.6667 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.3678/0.6219, allocations: 23.01 MB / 1.068 GB, free: 78.93 MB / 0.6823 GB Notification: Performance of preOpt comSubExp (simulation): time 0.004854/0.6268, allocations: 2.503 MB / 1.071 GB, free: 78.48 MB / 0.6823 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.00451/0.6313, allocations: 1.825 MB / 1.073 GB, free: 78.42 MB / 0.6823 GB Notification: Performance of preOpt evalFunc (simulation): time 0.000162/0.6315, allocations: 116.4 kB / 1.073 GB, free: 78.32 MB / 0.6823 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.142e-05/0.6315, allocations: 57.17 kB / 1.073 GB, free: 78.29 MB / 0.6823 GB Notification: Performance of pre-optimization done (n=123): time 3.156e-06/0.6315, allocations: 0 / 1.073 GB, free: 78.29 MB / 0.6823 GB Notification: Performance of matching and sorting (n=153): time 0.0342/0.6657, allocations: 11.74 MB / 1.084 GB, free: 75.27 MB / 0.6823 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.017e-05/0.6659, allocations: 228.4 kB / 1.084 GB, free: 75.01 MB / 0.6823 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001394/0.6673, allocations: 1.067 MB / 1.086 GB, free: 74.57 MB / 0.6823 GB Notification: Performance of collectPreVariables (initialization): time 0.0001252/0.6674, allocations: 55.05 kB / 1.086 GB, free: 74.52 MB / 0.6823 GB Notification: Performance of collectInitialEqns (initialization): time 0.0005997/0.668, allocations: 1.259 MB / 1.087 GB, free: 73.56 MB / 0.6823 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003978/0.6684, allocations: 0.5275 MB / 1.087 GB, free: 73.15 MB / 0.6823 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001294/0.6685, allocations: 41.62 kB / 1.087 GB, free: 73.12 MB / 0.6823 GB Notification: Performance of setup shared object (initialization): time 0.0001551/0.6687, allocations: 429.3 kB / 1.088 GB, free: 72.76 MB / 0.6823 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004332/0.673, allocations: 1.813 MB / 1.09 GB, free: 72.25 MB / 0.6823 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004312/0.6774, allocations: 2.499 MB / 1.092 GB, free: 70.87 MB / 0.6823 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.008187/0.6856, allocations: 4.328 MB / 1.096 GB, free: 68.81 MB / 0.6823 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.221e-05/0.6856, allocations: 10.22 kB / 1.096 GB, free: 68.8 MB / 0.6823 GB Notification: Performance of matching and sorting (n=282) (initialization): time 0.01045/0.696, allocations: 5.167 MB / 1.101 GB, free: 66.55 MB / 0.6823 GB Notification: Performance of prepare postOptimizeDAE: time 0.0002465/0.6963, allocations: 0.7281 MB / 1.102 GB, free: 65.55 MB / 0.6823 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.681e-05/0.6963, allocations: 20.97 kB / 1.102 GB, free: 65.55 MB / 0.6823 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002498/0.6988, allocations: 0.8708 MB / 1.103 GB, free: 65.12 MB / 0.6823 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002912/0.7018, allocations: 0.7748 MB / 1.104 GB, free: 64.86 MB / 0.6823 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01061/0.7124, allocations: 12.79 MB / 1.116 GB, free: 53.77 MB / 0.6823 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002738/0.7151, allocations: 461 kB / 1.117 GB, free: 53.55 MB / 0.6823 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002416/0.7154, allocations: 115.4 kB / 1.117 GB, free: 53.52 MB / 0.6823 GB Notification: Performance of prepare postOptimizeDAE: time 7.915e-06/0.7154, allocations: 3.719 kB / 1.117 GB, free: 53.52 MB / 0.6823 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01059/0.726, allocations: 5.019 MB / 1.122 GB, free: 50.87 MB / 0.6823 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.394e-05/0.7261, allocations: 25.91 kB / 1.122 GB, free: 50.87 MB / 0.6823 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001916/0.728, allocations: 0.7456 MB / 1.122 GB, free: 50.47 MB / 0.6823 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002787/0.7308, allocations: 0.7737 MB / 1.123 GB, free: 50.2 MB / 0.6823 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.009055/0.7399, allocations: 12.6 MB / 1.135 GB, free: 39.23 MB / 0.6823 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002448/0.7423, allocations: 446.7 kB / 1.136 GB, free: 39.02 MB / 0.6823 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002038/0.7425, allocations: 111.5 kB / 1.136 GB, free: 38.99 MB / 0.6823 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 97 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (240): * Single equations (assignments): 234 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 6 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 6 {(2,100.0%) 6,(2,100.0%) 6,(2,100.0%) 6,(2,100.0%) 6,(2,100.0%) 6,(2,100.0%) 6} * Non-linear torn systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.001589/0.7441, allocations: 1.334 MB / 1.137 GB, free: 38.11 MB / 0.6823 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003432/0.7445, allocations: 123 kB / 1.137 GB, free: 38.05 MB / 0.6823 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.009565/0.7541, allocations: 4.6 MB / 1.142 GB, free: 34.02 MB / 0.6823 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.122e-05/0.7541, allocations: 16 kB / 1.142 GB, free: 34 MB / 0.6823 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.574e-05/0.7541, allocations: 8 kB / 1.142 GB, free: 34 MB / 0.6823 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.253e-05/0.7541, allocations: 11.97 kB / 1.142 GB, free: 33.98 MB / 0.6823 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01335/0.7675, allocations: 8.298 MB / 1.15 GB, free: 25.52 MB / 0.6823 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.021e-05/0.7675, allocations: 12 kB / 1.15 GB, free: 25.5 MB / 0.6823 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002125/0.7696, allocations: 0.5303 MB / 1.15 GB, free: 24.97 MB / 0.6823 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001787/0.7714, allocations: 0.7095 MB / 1.151 GB, free: 24.25 MB / 0.6823 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001225/0.7716, allocations: 51.94 kB / 1.151 GB, free: 24.2 MB / 0.6823 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.008756/0.7803, allocations: 12.26 MB / 1.163 GB, free: 11.18 MB / 0.6823 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.109e-06/0.7803, allocations: 8 kB / 1.163 GB, free: 11.17 MB / 0.6823 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.008421/0.7888, allocations: 4.283 MB / 1.167 GB, free: 6.77 MB / 0.6823 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006399/0.7894, allocations: 0.4993 MB / 1.168 GB, free: 6.25 MB / 0.6823 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002006/0.7896, allocations: 43.98 kB / 1.168 GB, free: 6.207 MB / 0.6823 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002213/0.7919, allocations: 387.4 kB / 1.168 GB, free: 5.828 MB / 0.6823 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002015/0.7921, allocations: 136.6 kB / 1.168 GB, free: 5.691 MB / 0.6823 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001129/0.7922, allocations: 59.95 kB / 1.168 GB, free: 5.633 MB / 0.6823 GB Notification: Performance of sorting global known variables: time 0.0006805/0.7929, allocations: 0.7683 MB / 1.169 GB, free: 4.863 MB / 0.6823 GB Notification: Performance of sort global known variables: time 1.3e-07/0.7929, allocations: 0 / 1.169 GB, free: 4.863 MB / 0.6823 GB Notification: Performance of remove unused functions: time 0.002929/0.7958, allocations: 1.156 MB / 1.17 GB, free: 3.707 MB / 0.6823 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 32 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (107): * Single equations (assignments): 101 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 6 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 6 {(2,100.0%) 6,(2,100.0%) 6,(2,100.0%) 6,(2,100.0%) 6,(2,100.0%) 6,(2,100.0%) 6} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.008925/0.8047, allocations: 4.88 MB / 1.175 GB, free: 14.69 MB / 0.698 GB Notification: Performance of simCode: created initialization part: time 0.01601/0.8208, allocations: 8.158 MB / 1.183 GB, free: 6.402 MB / 0.698 GB Notification: Performance of simCode: created event and clocks part: time 5.871e-06/0.8208, allocations: 8.188 kB / 1.183 GB, free: 6.395 MB / 0.698 GB Notification: Performance of simCode: created simulation system equations: time 0.005384/0.8262, allocations: 2.747 MB / 1.186 GB, free: 3.574 MB / 0.698 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001796/0.828, allocations: 194.5 kB / 1.186 GB, free: 3.391 MB / 0.698 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0354/0.8634, allocations: 17.99 MB / 1.204 GB, free: 0.75 MB / 0.7136 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002159/0.8656, allocations: 2.327 MB / 1.206 GB, free: 14.39 MB / 0.7292 GB Notification: Performance of simCode: alias equations: time 0.003516/0.8691, allocations: 1.291 MB / 1.207 GB, free: 13.09 MB / 0.7292 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00116/0.8703, allocations: 0.873 MB / 1.208 GB, free: 12.22 MB / 0.7292 GB Notification: Performance of SimCode: time 5.11e-07/0.8703, allocations: 0 / 1.208 GB, free: 12.22 MB / 0.7292 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 1.653/2.524, allocations: 48.47 MB / 1.255 GB, free: 12.02 MB / 0.7761 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001967/2.524, allocations: 249.6 kB / 1.255 GB, free: 11.69 MB / 0.7761 GB Notification: Performance of buildModelFMU: Generate platform static: time 3.816/6.34, allocations: 0 / 1.255 GB, free: 11.69 MB / 0.7761 GB (rm -f Buildings_maint.8.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpDY.pipe ; mkfifo Buildings_maint.8.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpDY.pipe ; head -c 1048576 < Buildings_maint.8.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpDY.pipe >> ../files/Buildings_maint.8.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpDY.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_maint_8_0_x_Buildings_Electrical_AC_ThreePhasesUnbalanced_Conversion_Examples_TransformerStepUpDY_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 Buildings_maint_8_0_x_Buildings_Electrical_AC_ThreePhasesUnbalanced_Conversion_Examples_TransformerStepUpDY.fmu > Buildings_maint.8.0.x_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepUpDY.pipe 2>&1)